Place a vibrating tuning fork (usually 128 c/s) on a bony prominence, e.g. radius. Ask the patient to indicate when the vibration, if felt, ceases. If impaired, move more proximally and repeat. Vibration testing is of value in the early detection of demyelinating disease and peripheral neuropathy, but otherwise is of limited benefit.

If the above sensory functions are normal and a cortical lesion is suspected, it is useful to test for the following:

Two point discrimination: the ability to discriminate two blunt points when simultaneously applied to the finger, 5 mm apart (cf, 4 cm in the legs). Sensory inattention (perceptual rivalry): the ability to detect stimuli (pin prick or touch) in both limbs, when applied to both limbs simultaneously.

Stereognosis: the ability to recognise objects placed in the hand. Graphaesthesia: the ability to recognise numbers or letters traced out on the palm.

Blunt ends

Was this article helpful?

0 0
Peripheral Neuropathy Natural Treatment Options

Peripheral Neuropathy Natural Treatment Options

This guide will help millions of people understand this condition so that they can take control of their lives and make informed decisions. The ebook covers information on a vast number of different types of neuropathy. In addition, it will be a useful resource for their families, caregivers, and health care providers.

Get My Free Ebook

Post a comment